首页
登录
职称英语
[originaltext] Bows and arrows are one of the man’s oldest weapons. They gav
[originaltext] Bows and arrows are one of the man’s oldest weapons. They gav
游客
2023-07-16
56
管理
问题
Bows and arrows are one of the man’s oldest weapons. They gave early man an effective weapon to kill his enemies. The ordinary bow or short bow was used by nearly all early people. These bows had limited power or short range. However, man overcame these faults by learning to track his target at close range. The long bow was most likely discovered when someone found out that a five-foot piece wood made a better bow than a three-foot piece. Hundreds of thousands of these bows were made and used for three hundred years. However, not one is known to survive today. We believe that force of one hundred pounds was needed to pull the string all the way back on the long bow. For a long time, the bow was just a bent stick and a string. In fact, more changes have taken place in the bow in the past 25 years than in the last 7 centuries. Today’s bow is forceful. It is as exact as a gun. In addition, it requires little strength to draw the string. Modem bows also have precise aiming devices. In indoor contests, perfect scores from 40 yards are common. The invention of the bow itself ranks with the discovery of fire and the wheel. It was a great step forward for man.
选项
A、They are accurate and easy to pull.
B、Their shooting range is 40 yards.
C、They are usually used indoors.
D、They took 100 years to develop.
答案
A
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2842564.html
相关试题推荐
[originaltext]OneofraymaingoalsinthissurveycourseofAmericanpaint
[originaltext]Thelawyersrepresentingtwoeleven-year-oldboysaccusedofk
[originaltext]Thelawyersrepresentingtwoeleven-year-oldboysaccusedofk
[originaltext]M:Here’syourroom,you’llstayhereoverthreenights,madam?W
[originaltext]M:Ican’tbelieveKenmissedsuchanimportantmeetingeventho
[originaltext]M:Ican’tbelieveKenmissedsuchanimportantmeetingeventho
[originaltext]M:Ican’tbelieveKenmissedsuchanimportantmeetingeventho
[originaltext]M:Ican’tbelieveKenmissedsuchanimportantmeetingeventho
[originaltext]M:Ican’tbelieveKenmissedsuchanimportantmeetingeventho
[originaltext]RooseveltwastheonlypresidentinAmericanhistorywhoserv
随机试题
[audioFiles]audio_eufm_j01_309(200910)[/audioFiles]A、Theplayisseldomdelayed
HowtoBeMorePersuasiveA)Somepeoplehaveit,butman
Individualsandbusinesseshavelegalprotectionforintellectualpropertyt
TheBrazilianpartoftherainforestwillbewipedoutwithinthenexttwocentu
A.气滞 B.气逆 C.气陷 D.气闭 E.气脱气虚无力升举为主要特征的
影响企业人力资源活动的法律因素有()。A.户籍制度 B.劳动力市场价位 C
在对时间序列进行速度分析时,应注意的事项有( )。A.速度指标数值与基数大小有
影响汇率变动的主要因素有()。A.国际收支 B.市场预期 C.相对利率
根据分部组合计价原理,单位工程可依据()等的不同分解为分部工程。A.结构部
标线施工时,喷涂施工应在白天进行,雨天、风天、温度低于()℃时应暂时停止施工。A
最新回复
(
0
)